Coakley had planned to travel with a delegation of attorneys general to Turkey, but she no longer will take that trip, a spokesman said. She had announced last week through a spokesman that she would be unable to attend the convention.

APMartha Coakley

"As a result of a last-minute logistics and scheduling change, the attorney general is no longer traveling this weekend and is thrilled to be able to attend the state Democratic convention in Springfield," the spokesman, Brad Puffer, said on Thursday.

Coakley, who grew up in North Adams, has attended every state Democratic convention since 1998.

A spokesman for the state Democratic Party confirmed that Coakley will give a short speech, as will other constitutional officers such as Murray and Grossman.

About 5,000 delegates are expected to attend the convention on Saturday at the MassMutual Center in downtown Springfield.

Delegates are expected to vote to endorse Harvard law professor Elizabeth Warren for U.S. Senate in the Sept. 6 primary. Her only opponent, Marisa DeFranco, needs at least 15 percent of the delegate vote to appear on the primary ballot.

The winner of the primary would face Republican U.S. Sen. Scott P. Brown on Nov. 6.

Coakley lost to Brown in a January 2010 special election, but she won a second term as attorney general that year.